overheating, and low oil in the main tank {on the motor} I believe are the only things that will trigger an alarm
Doesn't the gauge tell you why it's happening?
I hate to break this news to you but those Yamaha 250 2 strokes are the biggest piece of %$%$%$%$ Yamaha ever put out !!!
1000s of them blown power head around 400 hrs !
Go to the Hull Truth and do some research and you will see